3-9. A half-wave rectifier of Fig. 3-5a has a 120 V rms, 60 Hz ac source. The load is

a series inductance, resistance, and de source, with L = 120 mH, R = 122, and

V₁ = 48 V. Determine (a) the power absorbed by the de voltage source, (b) the

power absorbed by the resistance, and (c) the power factor.